1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19864afc931e408b681e3b2383cc4d8996242e42ed414ae4d6a1a51163a395af. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c8eb7dd6-1bbb-46c7-bebc-eb9dc50e97a6.json and https://artists.proofprofile.net/proofs/artist/c8eb7dd6-1bbb-46c7-bebc-eb9dc50e97a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afe92c0c0e883831d7872ad3294ed0c00518b96ec9dac8ce2ac623d32fe9196. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE3GO2311201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e564093553929085e452158485d2b855ea15ffc37f6142c4fb39b487e55d0a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE3GO2408001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86101e56d29756ad321055831f1ba3dc3fc5db962ae2abef04a9c8666649410b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL2QC2101109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717660bbe91f18600bef18829ed9e58cae11722f3730830afaf5ccf2e2fe5917. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXW62100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf637f6790ff91af9bfc89e0bf0b42f23c4c188eacdd57acd57dddc9684ed96a4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWDE2433636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffe4da541d781bf18d0f275077ce28d5ed660cbb313708de3f6c96df0e7e394. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWDE2433638.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d9de7b4be70f1875e302e5ebdfb2705d970e088a103c7cb9a93c14bff97e49. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL2QC2100968.
Spinning (Kriss Reeve & Joxion Remix) - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2c6cca5b8424c7b092a3b451f9f3e729d68dd44a0ddda45e78ca8ff557d768. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL2QC2100980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657e30850d2377faf64c57bb8fb8db8534795bc83322c4aecc97aaf6ff2962dc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL2QC2100756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351c4d7b263386b51de44908d414c8bf057235c95dc6545fad9f7ca2acb74212. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL2QC2100757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0079d7b5ce42ad67bf3f95c61caa348a4e6c293ee9f8fa73fc0443acf5e22c46. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NL2QC2100405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0a03fbf5b5555a84294e232dd4e7a4aabcbcf605b56853558fc85e3b9d4a8b. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXW62100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef759da9543a3830c71e1a8b979358affeb2ac98f18ebd349608c14c55910d50. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXW62100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1420394818e2b262e78625561b7a79a04afaf6ee0aa06e05ebf439a6a4474c2d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXW62000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b6130cd61194b5d1a97f09db2e6935f125429574cec8145c59c7eb746c0276. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPI82016400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccef2259c79032d68aae3c7ac103922cf69382456e2b21df8367453fbeba8e1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLDD62000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe704c6aa18c100a7fc56ae54720f4d9181b5c4b44a014babcccbadc5bdc0a9dd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPY32000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb484083ec7bc2822fbf206a2ba8ffd8305961d2ff5165ef73c473aabc26e1740. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEPY31900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b072a385749c48e2ebd7357db16bd44339d9e1146de1282d924ab8ca7577a05. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLDD61900195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a124b316b760cf01186a2c381435cebc148af2ec1349338837f261bf12f309c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLQ8D1900537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fae7acd4a3483a950d469ff8e8b9fbe667f4054946c0c46e351af0492e9e2b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLDD61900138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cec9b19cb031848d1980fa5ab801dcd970d4f21fd12f8b583e2766ea8a42aa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLDD61900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cab18d767cbbaffda51ce959ac03a77639c66362aeb123f407cc8da24b036c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NO60G1801035.